#header{
    width: 100vw;
    display: flex;
    /*主轴方向两端对齐*/
    justify-content: space-between;
    /*交叉轴方向中间对齐*/
    align-items: center;
    margin-bottom: 0px;
}
span{ 
    color: gray;
    font-size: 20px;
    margin-top: 10px;
}
input{
    margin-top: 10px;
}
#button{
    width: 94vw;
    background-color: green;
    color: white;
    height: 12vw;
    margin-left: 3vw;
    margin-top: 10vw;
    border-radius: 2vw;
}
.radio{
    margin-top: 10px;

}
.input-group{
    width: 94vw;
    margin: 0 auto;
}
.input-group button{
    width: 10px;
}
.form-control{
    margin-top: 10px;
}